IT1292919B1 - DISTRIBUTOR FOR A CONTROLLED POSITION AND EFFORT HYDRAULIC LIFT FOR TRACTORS AND AGRICULTURAL MACHINES. - Google Patents
DISTRIBUTOR FOR A CONTROLLED POSITION AND EFFORT HYDRAULIC LIFT FOR TRACTORS AND AGRICULTURAL MACHINES.Info
- Publication number
- IT1292919B1 IT1292919B1 ITBO970289A IT1292919B1 IT 1292919 B1 IT1292919 B1 IT 1292919B1 IT BO970289 A ITBO970289 A IT BO970289A IT 1292919 B1 IT1292919 B1 IT 1292919B1
- Authority
- IT
- Italy
- Prior art keywords
- duct
- pct
- distributor
- valve
- tractors
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/321—Directional control characterised by the type of actuation mechanically
- F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/455—Control of flow in the feed line, i.e. meter-in control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/46—Control of flow in the return line, i.e. meter-out control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
- F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/615—Filtering means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7052—Single-acting output members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87169—Supply and exhaust
- Y10T137/87177—With bypass
- Y10T137/87185—Controlled by supply or exhaust valve
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
- Lifting Devices For Agricultural Implements (AREA)
- Agricultural Machines (AREA)
Abstract
PCT No. PCT/EP98/02694 Sec. 371 Date Mar. 12, 1999 Sec. 102(e) Date Mar. 12, 1999 PCT Filed May 7, 1998 PCT Pub. No. WO98/51932 PCT Pub. Date Nov. 19, 1998A distributor for a hydraulic hoist which is controllable with regard to position and applied force, for tractors and agricultural machines, comprises a compact body having at least one inlet duct for a pressurized fluid, at least one discharge duct and at least one duct for connection to a hydraulic cylinder for lifting the hoist arms. Arranged in the body of the distributor are a valve for modulating the flow of pressurized fluid and for communicating with the connecting duct by way of a main internal duct and a valve unit for discharging the fluid coming from the hydraulic lifting cylinder. A slider is movable inside the cylindrical body in two opposite directions with respect to a neutral position and controls the modulating valve hydraulically, preferably with the interposition of a consent valve. The slider also controls the discharge valve unit and a variable choke member arranged in the main internal duct.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT97BO000289 IT1292919B1 (en) | 1997-05-13 | 1997-05-13 | DISTRIBUTOR FOR A CONTROLLED POSITION AND EFFORT HYDRAULIC LIFT FOR TRACTORS AND AGRICULTURAL MACHINES. |
JP54876798A JP2000514909A (en) | 1997-05-13 | 1998-05-07 | Hydraulic hoist distributor with controllable position and applied force for tractors and agricultural machinery |
TR1999/00069T TR199900069T1 (en) | 1997-05-13 | 1998-05-07 | Distributor for a hydraulic lift for tractors |
AU76531/98A AU7653198A (en) | 1997-05-13 | 1998-05-07 | Distributor for a hydraulic hoist which is controllable with regard to position and applied force, for tractors and agricultural machines |
AT98924288T ATE257550T1 (en) | 1997-05-13 | 1998-05-07 | DISTRIBUTOR FOR A HYDRAULIC LIFTER, WHICH IS CONTROLLABLE WITH REGARD TO POSITION AND FORCE APPLIED, FOR USE IN TRACTORS AND AGRICULTURAL MACHINES |
EP98924288A EP0910748B1 (en) | 1997-05-13 | 1998-05-07 | Distributor for a hydraulic hoist which is controllable with regard to position and applied force, for tractors and agricultural machines |
US09/214,761 US6105613A (en) | 1997-05-13 | 1998-05-07 | Distributor for a hydraulic hoist which is controllable with regard to position and applied force, for tractors and agricultural machines |
DE1998620956 DE69820956T2 (en) | 1997-05-13 | 1998-05-07 | METHOD FOR A HYDRAULIC LIFTER, WHICH IS CONTROLLABLE REGARDING POSITION AND APPLIED FORCE, FOR USE IN TRACTORS AND AGRICULTURAL MACHINERY |
KR1019997000197A KR100342109B1 (en) | 1997-05-13 | 1998-05-07 | A hydrauric hoist which is controllable with regard to position and applied force, for tractors and agricultural machines, and distributor therefor |
ES98924288T ES2212298T3 (en) | 1997-05-13 | 1998-05-07 | DISTRIBUTOR FOR CONTROLLABLE HYDRAULIC ELEVATOR WITH REGARD TO THE POSITION AND APPLIED FORCE, FOR TRACTORS AND AGRICULTURAL MACHINES. |
PCT/EP1998/002694 WO1998051932A1 (en) | 1997-05-13 | 1998-05-07 | Distributor for a hydraulic hoist which is controllable with regard to position and applied force, for tractors and agricultural machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT97BO000289 IT1292919B1 (en) | 1997-05-13 | 1997-05-13 | DISTRIBUTOR FOR A CONTROLLED POSITION AND EFFORT HYDRAULIC LIFT FOR TRACTORS AND AGRICULTURAL MACHINES. |
Publications (3)
Publication Number | Publication Date |
---|---|
ITBO970289A0 ITBO970289A0 (en) | 1997-05-13 |
ITBO970289A1 ITBO970289A1 (en) | 1998-11-13 |
IT1292919B1 true IT1292919B1 (en) | 1999-02-11 |
Family
ID=11342265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT97BO000289 IT1292919B1 (en) | 1997-05-13 | 1997-05-13 | DISTRIBUTOR FOR A CONTROLLED POSITION AND EFFORT HYDRAULIC LIFT FOR TRACTORS AND AGRICULTURAL MACHINES. |
Country Status (11)
Country | Link |
---|---|
US (1) | US6105613A (en) |
EP (1) | EP0910748B1 (en) |
JP (1) | JP2000514909A (en) |
KR (1) | KR100342109B1 (en) |
AT (1) | ATE257550T1 (en) |
AU (1) | AU7653198A (en) |
DE (1) | DE69820956T2 (en) |
ES (1) | ES2212298T3 (en) |
IT (1) | IT1292919B1 (en) |
TR (1) | TR199900069T1 (en) |
WO (1) | WO1998051932A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE525355C2 (en) * | 2003-06-19 | 2005-02-08 | Hydrauto Valves Ab | Outriggers valve |
JP2007139148A (en) * | 2005-11-22 | 2007-06-07 | Kubota Corp | Hydraulic device of work machine |
CN101990797A (en) * | 2010-09-01 | 2011-03-30 | 中国一拖集团有限公司 | Combined hydraulic fluid distributor for tractor |
CN106151141B (en) * | 2016-07-07 | 2017-10-17 | 第一拖拉机股份有限公司 | A kind of tractor distributor |
CN106015146B (en) * | 2016-07-18 | 2018-09-25 | 山东弘宇农机股份有限公司 | A kind of built-in pressure distributor |
TR201708846A2 (en) * | 2017-06-15 | 2017-09-21 | Hema Enduestri Anonim Sirketi | A CONTROL VALVE FOR HYDRAULIC LIFTS |
IT202000002977A1 (en) * | 2020-02-14 | 2021-08-14 | Negri Srl | HYDRAULIC CONTROL CIRCUIT FOR AN OPERATING MACHINE AND RELATED OPERATING MACHINE |
CN113446281B (en) * | 2021-07-22 | 2022-07-15 | 山东弘宇农机股份有限公司 | Lifter distributor for tractor |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4176685A (en) * | 1978-02-09 | 1979-12-04 | Robert Bosch Gmbh | Valve arrangement for controlling the flow of hydraulic fluid to and from a user |
DE2810375A1 (en) * | 1978-03-10 | 1979-09-20 | Bosch Gmbh Robert | CONTROL DEVICE FOR HYDRAULIC POWER TRANSFER |
DE3115037A1 (en) * | 1981-04-14 | 1982-11-04 | Robert Bosch Gmbh, 7000 Stuttgart | Control device for a hydraulic servomotor |
DE3216580A1 (en) * | 1981-05-07 | 1983-02-24 | Hiab-Foco AB, 82401 Hudiksvall | Load-holding and load-lowering brake valve |
JPS58121303A (en) * | 1982-01-09 | 1983-07-19 | Uchida Yuatsu Kiki Kogyo Kk | Control circuit device for flow rate |
DE3237103C3 (en) * | 1982-10-07 | 1997-01-23 | Wessel Hydraulik | Safety valve as a load holding valve in the hoist hydraulics |
JPH02236002A (en) * | 1989-03-08 | 1990-09-18 | Kubota Ltd | Hydraulic circuit for working vehicle elevator |
-
1997
- 1997-05-13 IT IT97BO000289 patent/IT1292919B1/en active IP Right Grant
-
1998
- 1998-05-07 AT AT98924288T patent/ATE257550T1/en active
- 1998-05-07 TR TR1999/00069T patent/TR199900069T1/en unknown
- 1998-05-07 KR KR1019997000197A patent/KR100342109B1/en not_active IP Right Cessation
- 1998-05-07 EP EP98924288A patent/EP0910748B1/en not_active Expired - Lifetime
- 1998-05-07 ES ES98924288T patent/ES2212298T3/en not_active Expired - Lifetime
- 1998-05-07 AU AU76531/98A patent/AU7653198A/en not_active Abandoned
- 1998-05-07 DE DE1998620956 patent/DE69820956T2/en not_active Expired - Lifetime
- 1998-05-07 US US09/214,761 patent/US6105613A/en not_active Expired - Lifetime
- 1998-05-07 JP JP54876798A patent/JP2000514909A/en active Pending
- 1998-05-07 WO PCT/EP1998/002694 patent/WO1998051932A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
US6105613A (en) | 2000-08-22 |
KR100342109B1 (en) | 2002-06-26 |
EP0910748A1 (en) | 1999-04-28 |
JP2000514909A (en) | 2000-11-07 |
ITBO970289A0 (en) | 1997-05-13 |
TR199900069T1 (en) | 1999-08-23 |
ES2212298T3 (en) | 2004-07-16 |
DE69820956D1 (en) | 2004-02-12 |
DE69820956T2 (en) | 2004-12-23 |
ITBO970289A1 (en) | 1998-11-13 |
KR20000023734A (en) | 2000-04-25 |
EP0910748B1 (en) | 2004-01-07 |
AU7653198A (en) | 1998-12-08 |
ATE257550T1 (en) | 2004-01-15 |
WO1998051932A1 (en) | 1998-11-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted |